testing sample

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• Sample size determination — is the act of choosing the number of observations to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample …   Wikipedia

• sample — [sam′pəl, säm′pəl] n. [ME, aphetic for asample < Anglo Fr, for OFr essample: see EXAMPLE] 1. a part, piece, or item taken or shown as representative of a whole thing, group, species, etc.; specimen; pattern [samples of wallpaper] 2. an… …   English World dictionary

• sample — ► NOUN 1) a small part or quantity intended to show what the whole is like. 2) Statistics a portion of a population, serving as a basis for estimates of the attributes of the whole population. 3) a specimen taken for scientific testing or… …   English terms dictionary

• Sample maximum and minimum — Box plots of the Michelson–Morley experiment, showing sample maximums and minimums. In statistics, the maximum and sample minimum, also called the largest observation, and smallest observation, are the values of the greatest and least elements of …   Wikipedia

• Sample (material) — In general, a sample is a limited quantity of something which is intended to be similar to and represent a larger amount of that thing(s). The things could be countable objects such as individual items available as units for sale, or a material… …   Wikipedia

• Sample — A subset containing the characteristics of a larger population. Samples are used in statistical testing when population sizes are too large for the test to include all possible members or observations. A sample should represent the whole… …   Investment dictionary

• sample — ▪ I. sample sam‧ple 1 [ˈsɑːmpl ǁ ˈsæm ] noun [countable] 1. a number of people or things chosen from a large group to take part in studies that provide information about the whole group: sample of • Of a sample of executives in 600 companies,… …   Financial and business terms

• Sample return mission — Als Sample return mission, (dt. etwa Proben Rückhol Mission) werden Raumfahrtmissionen bezeichnet, bei denen extraterrestrische Gesteins und Bodenproben von astronomischen Objekten, wie Planeten, Monden oder Kleinkörpern, für Analysezwecke zur… …   Deutsch Wikipedia

• Testing hypotheses suggested by the data — In statistics, hypotheses suggested by the data must be tested differently from hypotheses formed independently of the data.How to do it wrongFor example, suppose fifty different researchers, unaware of each other s work, run clinical trials to… …   Wikipedia

• Sample Selection Bias — A type of bias caused by choosing non random data for statistical analysis. The bias exists due to a flaw in the sample selection process, where a subset of the data is systematically excluded due to a particular attribute. The exclusion of the… …   Investment dictionary

• sample — 1. A specimen of a whole entity small enough to involve no threat or damage to the whole; an aliquot. 2. A selected subset of a population; a s. may be random or nonrandom (haphazard), representative or nonrepresentative. [M.E. ensample, fr. L.… …   Medical dictionary